src/GeomAPI/GeomAPI_Face.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        GeomAPI_Face.cpp
   4 // Created:     2 Dec 2014
   5 // Author:      Artem ZHIDKOV
   6
   7 #include <GeomAPI_Face.h>
   8 #include <GeomAPI_Dir.h>
   9 #include <GeomAPI_Pln.h>
  10 #include <GeomAPI_Pnt.h>
  11
  12 #include <TopoDS_Shape.hxx>
  13 #include <TopoDS_Face.hxx>
  14 #include <TopoDS.hxx>
  15 #include <BRep_Tool.hxx>
  16 #include <BRepAdaptor_Surface.hxx>
  17 #include <Geom_Surface.hxx>
  18 #include <Geom_Plane.hxx>
  19 #include <Geom_CylindricalSurface.hxx>
  20 #include <GeomLib_IsPlanarSurface.hxx>
  21 #include <Geom_RectangularTrimmedSurface.hxx>
  22
  23 GeomAPI_Face::GeomAPI_Face()
  24   : GeomAPI_Shape()
  25 {
  26 }
  27
  28 GeomAPI_Face::GeomAPI_Face(const std::shared_ptr<GeomAPI_Shape>& theShape)
  29 {
  30   if (!theShape->isNull() && theShape->isFace()) {
  31     setImpl(new TopoDS_Shape(theShape->impl<TopoDS_Shape>()));
  32   }
  33 }
  34
  35 bool GeomAPI_Face::isEqual(std::shared_ptr<GeomAPI_Shape> theFace) const
  36 {
  37   if (!theFace->isFace())
  38     return false;
  39
  40   const TopoDS_Shape& aMyShape = const_cast<GeomAPI_Face*>(this)->impl<TopoDS_Shape>();
  41   const TopoDS_Shape& aInShape = theFace->impl<TopoDS_Shape>();
  42
  43   Handle(Geom_Surface) aMySurf = BRep_Tool::Surface(TopoDS::Face(aMyShape));
  44   Handle(Geom_Surface) aInSurf = BRep_Tool::Surface(TopoDS::Face(aInShape));
  45
  46   // Check that surfaces a the same type
  47   if (aMySurf->DynamicType() != aInSurf->DynamicType())
  48     return false;
  49
  50   // Get parameters of surfaces
  51   double aMyUMin, aMyUMax, aMyVMin, aMyVMax;
  52   aMySurf->Bounds(aMyUMin, aMyUMax, aMyVMin, aMyVMax);
  53   double aInUMin, aInUMax, aInVMin, aInVMax;
  54   aInSurf->Bounds(aInUMin, aInUMax, aInVMin, aInVMax);
  55
  56   // Check that parameters are the same
  57   if (fabs(aMyUMin - aInUMin) > Precision::PConfusion() ||
  58       fabs(aMyUMax - aInUMax) > Precision::PConfusion() ||
  59       fabs(aMyVMin - aInVMin) > Precision::PConfusion() ||
  60       fabs(aMyVMax - aInVMax) > Precision::PConfusion())
  61     return false;
  62
  63   return true;
  64 }
  65
  66 bool GeomAPI_Face::isPlanar() const
  67 {
  68   const TopoDS_Shape& aShape = const_cast<GeomAPI_Face*>(this)->impl<TopoDS_Shape>();
  69   Handle(Geom_Surface) aSurf = BRep_Tool::Surface(TopoDS::Face(aShape));
  70   Handle(Geom_RectangularTrimmedSurface) aTrimmed =
  71     Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurf);
  72   if (!aTrimmed.IsNull())
  73     aSurf = aTrimmed->BasisSurface();
  74   GeomLib_IsPlanarSurface isPlanar(aSurf);
  75   return isPlanar.IsPlanar() == Standard_True;
  76 }
  77
  78 bool GeomAPI_Face::isCylindrical() const
  79 {
  80   const TopoDS_Shape& aShape = const_cast<GeomAPI_Face*>(this)->impl<TopoDS_Shape>();
  81   Handle(Geom_Surface) aSurf = BRep_Tool::Surface(TopoDS::Face(aShape));
  82   Handle(Geom_RectangularTrimmedSurface) aTrimmed =
  83     Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurf);
  84   if (!aTrimmed.IsNull())
  85     aSurf = aTrimmed->BasisSurface();
  86   return aSurf->IsKind(STANDARD_TYPE(Geom_CylindricalSurface)) == Standard_True;
  87 }
  88
  89 std::shared_ptr<GeomAPI_Pln> GeomAPI_Face::getPlane() const
  90 {
  91   const TopoDS_Shape& aShape = const_cast<GeomAPI_Face*>(this)->impl<TopoDS_Shape>();
  92   BRepAdaptor_Surface aSurfAdapt(TopoDS::Face(aShape));
  93
  94   if (aSurfAdapt.GetType() != GeomAbs_Plane)
  95     return std::shared_ptr<GeomAPI_Pln>();
  96
  97   // Obtain central point
  98   double aUMin, aUMax, aVMin, aVMax;
  99   aUMin = aSurfAdapt.FirstUParameter();
 100   aUMax = aSurfAdapt.LastUParameter();
 101   aVMin = aSurfAdapt.FirstVParameter();
 102   aVMax = aSurfAdapt.LastVParameter();
 103   gp_Pnt aCentralPnt;
 104   gp_Vec aDU, aDV;
 105   aSurfAdapt.D1((aUMin+aUMax)*0.5, (aVMin+aVMax)*0.5, aCentralPnt, aDU, aDV);
 106   std::shared_ptr<GeomAPI_Pnt> aCenter(
 107       new GeomAPI_Pnt(aCentralPnt.X(), aCentralPnt.Y(), aCentralPnt.Z()));
 108
 109   // Obtain plane direction
 110   gp_XYZ aNormalVec = aDU.XYZ().Crossed(aDV.XYZ());
 111   if (aNormalVec.SquareModulus() < Precision::Confusion() * Precision::Confusion())
 112     return std::shared_ptr<GeomAPI_Pln>();
 113   std::shared_ptr<GeomAPI_Dir> aNormal(
 114       new GeomAPI_Dir(aNormalVec.X(), aNormalVec.Y(), aNormalVec.Z()));
 115
 116   std::shared_ptr<GeomAPI_Pln> aResult(new GeomAPI_Pln(aCenter, aNormal));
 117   return aResult;
 118 }